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<h1>src/qvio/qvdirreader.cpp</h1><a href="qvdirreader_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> *   Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012. PARP Research Group.</span>
<a name="l00003"></a>00003 <span class="comment"> *   &lt;http://perception.inf.um.es&gt;</span>
<a name="l00004"></a>00004 <span class="comment"> *   University of Murcia, Spain.</span>
<a name="l00005"></a>00005 <span class="comment"> *</span>
<a name="l00006"></a>00006 <span class="comment"> *   This file is part of the QVision library.</span>
<a name="l00007"></a>00007 <span class="comment"> *</span>
<a name="l00008"></a>00008 <span class="comment"> *   QVision is free software: you can redistribute it and/or modify</span>
<a name="l00009"></a>00009 <span class="comment"> *   it under the terms of the GNU Lesser General Public License as</span>
<a name="l00010"></a>00010 <span class="comment"> *   published by the Free Software Foundation, version 3 of the License.</span>
<a name="l00011"></a>00011 <span class="comment"> *</span>
<a name="l00012"></a>00012 <span class="comment"> *   QVision is distributed in the hope that it will be useful,</span>
<a name="l00013"></a>00013 <span class="comment"> *   but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00014"></a>00014 <span class="comment"> *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the</span>
<a name="l00015"></a>00015 <span class="comment"> *   GNU Lesser General Public License for more details.</span>
<a name="l00016"></a>00016 <span class="comment"> *</span>
<a name="l00017"></a>00017 <span class="comment"> *   You should have received a copy of the GNU Lesser General Public</span>
<a name="l00018"></a>00018 <span class="comment"> *   License along with QVision. If not, see &lt;http://www.gnu.org/licenses/&gt;.</span>
<a name="l00019"></a>00019 <span class="comment"> */</span>
<a name="l00020"></a>00020 
<a name="l00024"></a>00024 
<a name="l00025"></a>00025 <span class="preprocessor">#include &lt;QVDirReader&gt;</span>
<a name="l00026"></a>00026 
<a name="l00027"></a>00027 <span class="preprocessor">#include &lt;QUrl&gt;</span>
<a name="l00028"></a>00028 
<a name="l00029"></a>00029 <span class="preprocessor">#ifdef QVIPP</span>
<a name="l00030"></a>00030 <span class="preprocessor"></span><span class="preprocessor">#include &lt;qvipp.h&gt;</span>
<a name="l00031"></a>00031 <span class="preprocessor">#endif // QVIPP</span>
<a name="l00032"></a>00032 <span class="preprocessor"></span>
<a name="l00033"></a>00033 <span class="keywordtype">bool</span> QVDirReader:: open(<span class="keyword">const</span> QString &amp; url_string,
<a name="l00034"></a>00034                          <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> &amp; suggested_cols, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> &amp; suggested_rows,
<a name="l00035"></a>00035                          <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> &amp; suggested_fps, <a class="code" href="classQVVideoReader.html#a5897497caf38c09bace454d3e205ede0" title="Open options for a video source.">QVVideoReader::OpenOptions</a> &amp; suggested_options,
<a name="l00036"></a>00036                          <a class="code" href="classQVVideoReader.html#ae7f437e441e6b0d6c0acbb1edbdc6421" title="Possible preferred modes for video sources.">QVVideoReader::TSourceMode</a> &amp; source_mode)
<a name="l00037"></a>00037 {
<a name="l00038"></a>00038 
<a name="l00039"></a>00039         <span class="comment">// Preferred mode: RGB</span>
<a name="l00040"></a>00040         source_mode = <a class="code" href="classQVVideoReader.html#ae7f437e441e6b0d6c0acbb1edbdc6421a65e1ba18291e438596be5197a7901337" title="Source outputs RGB images by default.">QVVideoReader::RGBMode</a>;
<a name="l00041"></a>00041 
<a name="l00042"></a>00042         ended = <span class="keyword">false</span>;
<a name="l00043"></a>00043 
<a name="l00044"></a>00044         <span class="comment">// Treat both isolated directory names and path to files (with possible wildcards):</span>
<a name="l00045"></a>00045         QString dir_string = url_string;
<a name="l00046"></a>00046         dir_string.remove(<span class="stringliteral">&quot;dir://&quot;</span>);
<a name="l00047"></a>00047         QStringList filters;
<a name="l00048"></a>00048         QFileInfo info(dir_string);
<a name="l00049"></a>00049         <span class="keywordflow">if</span>(info.isDir()) { <span class="comment">// Will read every image file in specified dir:</span>
<a name="l00050"></a>00050             dir = QDir(dir_string);
<a name="l00051"></a>00051             filters &lt;&lt; <span class="stringliteral">&quot;*.jpg&quot;</span> &lt;&lt; <span class="stringliteral">&quot;*.png&quot;</span> &lt;&lt; <span class="stringliteral">&quot;*.bmp&quot;</span> &lt;&lt; <span class="stringliteral">&quot;*.pgm&quot;</span> &lt;&lt; <span class="stringliteral">&quot;*.gif&quot;</span> &lt;&lt; <span class="stringliteral">&quot;*.jpeg&quot;</span> &lt;&lt; <span class="stringliteral">&quot;*.pbm&quot;</span> &lt;&lt; <span class="stringliteral">&quot;*.ppm&quot;</span>
<a name="l00052"></a>00052                     &lt;&lt; <span class="stringliteral">&quot;*.tiff&quot;</span> &lt;&lt; <span class="stringliteral">&quot;*.xbm&quot;</span> &lt;&lt; <span class="stringliteral">&quot;*.xpm&quot;</span>;
<a name="l00053"></a>00053         } <span class="keywordflow">else</span> { <span class="comment">// Will read only selected files (i.e. using wildcards) in specified dir:</span>
<a name="l00054"></a>00054             QString path = info.path(), files = info.fileName();
<a name="l00055"></a>00055             QFileInfo info(path);
<a name="l00056"></a>00056             <span class="keywordflow">if</span>(not info.isDir())
<a name="l00057"></a>00057                 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00058"></a>00058             dir = QDir(path);
<a name="l00059"></a>00059             filters &lt;&lt; files;
<a name="l00060"></a>00060         }
<a name="l00061"></a>00061         dir.setNameFilters(filters);
<a name="l00062"></a>00062         dir.setSorting(QDir::Name);
<a name="l00063"></a>00063         filenames = dir.entryList();
<a name="l00064"></a>00064 
<a name="l00065"></a>00065         <span class="keywordflow">if</span>(filenames.isEmpty())
<a name="l00066"></a>00066             <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00067"></a>00067 
<a name="l00068"></a>00068         <span class="comment">// NoLoop &amp; realTime flags:</span>
<a name="l00069"></a>00069         noLoop = (suggested_options &amp; <a class="code" href="classQVVideoReader.html#a0a3fbed9c7741e2c85c65df76c8e604bafa19a0a74c786eaa4d71f5102a1a7aa3" title="Continue from the beginning of the video source when it reaches the end.">QVVideoReader::NoLoop</a>);
<a name="l00070"></a>00070         realTime = (suggested_options &amp; <a class="code" href="classQVVideoReader.html#a0a3fbed9c7741e2c85c65df76c8e604ba0125897d48c0c6f4d1b399bb2d3b746d">QVVideoReader::RealTime</a>);
<a name="l00071"></a>00071 
<a name="l00072"></a>00072         <span class="keywordflow">if</span>(realTime)
<a name="l00073"></a>00073             suggested_fps = 25;
<a name="l00074"></a>00074 
<a name="l00075"></a>00075         <span class="comment">// std::cout &lt;&lt; qPrintable(dir.absolutePath()) &lt;&lt; &quot;\n&quot;;</span>
<a name="l00076"></a>00076 
<a name="l00077"></a>00077         <span class="comment">// Will not rescale, answer size (0,0)</span>
<a name="l00078"></a>00078         suggested_cols = suggested_rows = 0;
<a name="l00079"></a>00079 
<a name="l00080"></a>00080         <span class="keywordflow">if</span>(filenames.size() &gt; 0) {
<a name="l00081"></a>00081             index = 0;
<a name="l00082"></a>00082             <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00083"></a>00083         } <span class="keywordflow">else</span>
<a name="l00084"></a>00084             <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00085"></a>00085 }
<a name="l00086"></a>00086 
<a name="l00087"></a>00087 <span class="keywordtype">bool</span> QVDirReader::close()
<a name="l00088"></a>00088 {
<a name="l00089"></a>00089     <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00090"></a>00090 }
<a name="l00091"></a>00091 
<a name="l00092"></a>00092 <span class="keywordtype">bool</span> QVDirReader::grab(<a class="code" href="classQVImage.html">QVImage&lt;uChar,1&gt;</a> &amp;imgR, <a class="code" href="classQVImage.html">QVImage&lt;uChar,1&gt;</a> &amp;imgG, <a class="code" href="classQVImage.html">QVImage&lt;uChar,1&gt;</a> &amp;imgB)
<a name="l00093"></a>00093 {
<a name="l00094"></a>00094         <span class="keywordflow">if</span>(ended)
<a name="l00095"></a>00095             <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00096"></a>00096 
<a name="l00097"></a>00097         QString fullpathtofile = dir.absolutePath() + <span class="stringliteral">&quot;/&quot;</span> + filenames.at(index);
<a name="l00098"></a>00098 
<a name="l00099"></a>00099         <span class="comment">//std::cout &lt;&lt; &quot;QVDirReader::grab: Read file &quot; &lt;&lt; qPrintable(fullpathtofile) &lt;&lt; &quot;\n&quot;;</span>
<a name="l00100"></a>00100 
<a name="l00101"></a>00101         <a class="code" href="classQVImage.html" title="Image representation class for the QVision.">QVImage&lt;uchar,3&gt;</a> ColorImage(fullpathtofile);
<a name="l00102"></a>00102 
<a name="l00103"></a>00103         <span class="comment">/* Not needed yet (all resizing in qvvideoreader.cpp):</span>
<a name="l00104"></a>00104 <span class="comment">        if((cols_out != 0 and rows_out !=0) || (ColorImage.getRows()%2==1) || (ColorImage.getCols()%2==1)) {</span>
<a name="l00105"></a>00105 <span class="comment">            QVImage&lt;uchar,3&gt; InterImage;</span>
<a name="l00106"></a>00106 <span class="comment">            if(cols_out == 0 || rows_out == 0)</span>
<a name="l00107"></a>00107 <span class="comment">                InterImage.resize(ColorImage.getCols() &amp; 0xfffffffe,ColorImage.getRows() &amp; 0xfffffffe);</span>
<a name="l00108"></a>00108 <span class="comment">            else</span>
<a name="l00109"></a>00109 <span class="comment">                InterImage.resize(cols_out,rows_out);</span>
<a name="l00110"></a>00110 <span class="comment">            InterImage.resetROI();</span>
<a name="l00111"></a>00111 <span class="comment">            Resize(ColorImage,InterImage);</span>
<a name="l00112"></a>00112 <span class="comment">            ColorImage = InterImage;</span>
<a name="l00113"></a>00113 <span class="comment">        }*/</span>
<a name="l00114"></a>00114 
<a name="l00115"></a>00115         imgR = <a class="code" href="classQVImage.html">QVImage&lt;uChar&gt;</a>(ColorImage.getCols(),ColorImage.getRows());
<a name="l00116"></a>00116         imgG = <a class="code" href="classQVImage.html">QVImage&lt;uChar&gt;</a>(ColorImage.getCols(),ColorImage.getRows());
<a name="l00117"></a>00117         imgB = <a class="code" href="classQVImage.html">QVImage&lt;uChar&gt;</a>(ColorImage.getCols(),ColorImage.getRows());
<a name="l00118"></a>00118         Copy(ColorImage,0,imgR);
<a name="l00119"></a>00119         Copy(ColorImage,1,imgG);
<a name="l00120"></a>00120         Copy(ColorImage,2,imgB);
<a name="l00121"></a>00121 
<a name="l00122"></a>00122         index = index + 1;
<a name="l00123"></a>00123         <span class="keywordflow">if</span>(index == filenames.size()) {
<a name="l00124"></a>00124             <span class="keywordflow">if</span>(noLoop) {
<a name="l00125"></a>00125                 ended = <span class="keyword">true</span>;
<a name="l00126"></a>00126                 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00127"></a>00127             } <span class="keywordflow">else</span>
<a name="l00128"></a>00128                 index = 0;
<a name="l00129"></a>00129         }
<a name="l00130"></a>00130         <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00131"></a>00131 }
<a name="l00132"></a>00132 
<a name="l00133"></a>00133 <span class="keywordtype">int</span> QVDirReader::getLength()
<a name="l00134"></a>00134 {
<a name="l00135"></a>00135     <span class="keywordflow">return</span> <span class="keyword">static_cast&lt;</span><span class="keywordtype">double</span><span class="keyword">&gt;</span>(filenames.size());
<a name="l00136"></a>00136 }
<a name="l00137"></a>00137 
<a name="l00138"></a>00138 <span class="keywordtype">int</span> QVDirReader::getPos()
<a name="l00139"></a>00139 {
<a name="l00140"></a>00140     <span class="keywordflow">return</span> <span class="keyword">static_cast&lt;</span><span class="keywordtype">double</span><span class="keyword">&gt;</span>(index);
<a name="l00141"></a>00141 }
<a name="l00142"></a>00142 
<a name="l00143"></a>00143 <span class="keywordtype">bool</span> QVDirReader::seek(<span class="keywordtype">int</span> pos)
<a name="l00144"></a>00144 {
<a name="l00145"></a>00145     index = pos;
<a name="l00146"></a>00146     <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00147"></a>00147 }
</pre></div></div>
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<br /><hr><br />
<center><a href="http://perception.inf.um.es/QVision">QVision framework</a>.
<a href="http://perception.inf.um.es">PARP research group</a>.
Copyright &copy; 2007, 2008, 2009, 2010, 2011.</center>
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